1 /* Copyright (C) 1991, 92, 93, 96, 97, 98, 99 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 This library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Library General Public License as
6 published by the Free Software Foundation; either version 2 of the
7 License, or (at your option) any later version.
9 This library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Library General Public License for more details.
14 You should have received a copy of the GNU Library General Public
15 License along with this library; see the file COPYING.LIB. If not,
16 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 Boston, MA 02111-1307, USA. */
23 /* Enable GNU extensions in fnmatch.h. */
25 # define _GNU_SOURCE 1
32 #if HAVE_STRING_H || defined _LIBC
38 #if defined STDC_HEADERS || defined _LIBC
42 /* For platforms which support the ISO C amendment 1 functionality we
43 support user defined character classes. */
44 #if defined _LIBC || (defined HAVE_WCTYPE_H && defined HAVE_WCHAR_H)
45 /* Solaris 2.5 has a bug: <wchar.h> must be included before <wctype.h>. */
50 /* Comment out all this code if we are using the GNU C Library, and are not
51 actually compiling the library itself. This code is part of the GNU C
52 Library, but also included in many other GNU distributions. Compiling
53 and linking in this code is a waste when using the GNU C library
54 (especially if it is a shared library). Rather than having every GNU
55 program understand `configure --with-gnu-libc' and omit the object files,
56 it is simpler to just do this in the source for each such file. */
58 #if defined _LIBC || !defined __GNU_LIBRARY__
61 # if defined STDC_HEADERS || !defined isascii
64 # define ISASCII(c) isascii(c)
68 # define ISBLANK(c) (ISASCII (c) && isblank (c))
70 # define ISBLANK(c) ((c) == ' ' || (c) == '\t')
73 # define ISGRAPH(c) (ISASCII (c) && isgraph (c))
75 # define ISGRAPH(c) (ISASCII (c) && isprint (c) && !isspace (c))
78 # define ISPRINT(c) (ISASCII (c) && isprint (c))
79 # define ISDIGIT(c) (ISASCII (c) && isdigit (c))
80 # define ISALNUM(c) (ISASCII (c) && isalnum (c))
81 # define ISALPHA(c) (ISASCII (c) && isalpha (c))
82 # define ISCNTRL(c) (ISASCII (c) && iscntrl (c))
83 # define ISLOWER(c) (ISASCII (c) && islower (c))
84 # define ISPUNCT(c) (ISASCII (c) && ispunct (c))
85 # define ISSPACE(c) (ISASCII (c) && isspace (c))
86 # define ISUPPER(c) (ISASCII (c) && isupper (c))
87 # define ISXDIGIT(c) (ISASCII (c) && isxdigit (c))
89 # define STREQ(s1, s2) ((strcmp (s1, s2) == 0))
91 # if defined _LIBC || (defined HAVE_WCTYPE_H && defined HAVE_WCHAR_H)
92 /* The GNU C library provides support for user-defined character classes
93 and the functions from ISO C amendment 1. */
94 # ifdef CHARCLASS_NAME_MAX
95 # define CHAR_CLASS_MAX_LENGTH CHARCLASS_NAME_MAX
97 /* This shouldn't happen but some implementation might still have this
98 problem. Use a reasonable default value. */
99 # define CHAR_CLASS_MAX_LENGTH 256
103 # define IS_CHAR_CLASS(string) __wctype (string)
105 # define IS_CHAR_CLASS(string) wctype (string)
108 # define CHAR_CLASS_MAX_LENGTH 6 /* Namely, `xdigit'. */
110 # define IS_CHAR_CLASS(string) \
111 (STREQ (string, "alpha") || STREQ (string, "upper") \
112 || STREQ (string, "lower") || STREQ (string, "digit") \
113 || STREQ (string, "alnum") || STREQ (string, "xdigit") \
114 || STREQ (string, "space") || STREQ (string, "print") \
115 || STREQ (string, "punct") || STREQ (string, "graph") \
116 || STREQ (string, "cntrl") || STREQ (string, "blank"))
119 /* Avoid depending on library functions or files
120 whose names are inconsistent. */
122 # if !defined _LIBC && !defined getenv
123 extern char *getenv ();
134 /* This function doesn't exist on most systems. */
136 # if !defined HAVE___STRCHRNUL && !defined _LIBC
138 __strchrnul (const char *s, int c)
142 char *result = strchr (s, c);
144 result = strchr (s, '\0');
149 # ifndef internal_function
150 /* Inside GNU libc we mark some function in a special way. In other
151 environments simply ignore the marking. */
152 # define internal_function
155 /* Match STRING against the filename pattern PATTERN, returning zero if
156 it matches, nonzero if not. */
157 static int internal_fnmatch __P ((const char *pattern, const char *string,
158 int no_leading_period, int flags))
162 internal_fnmatch (const char *pattern, const char *string, int no_leading_period, int flags)
168 register const char *p = pattern, *n = string;
169 register unsigned char c;
171 /* Note that this evaluates C many times. */
173 # define FOLD(c) ((flags & FNM_CASEFOLD) ? tolower (c) : (c))
175 # define FOLD(c) ((flags & FNM_CASEFOLD) && ISUPPER (c) ? tolower (c) : (c))
178 while ((c = *p++) != '\0')
187 else if (*n == '/' && (flags & FNM_FILE_NAME))
189 else if (*n == '.' && no_leading_period
191 || (n[-1] == '/' && (flags & FNM_FILE_NAME))))
196 if (!(flags & FNM_NOESCAPE))
200 /* Trailing \ loses. */
204 if (FOLD ((unsigned char) *n) != c)
209 if (*n == '.' && no_leading_period
211 || (n[-1] == '/' && (flags & FNM_FILE_NAME))))
214 for (c = *p++; c == '?' || c == '*'; c = *p++)
216 if (*n == '/' && (flags & FNM_FILE_NAME))
217 /* A slash does not match a wildcard under FNM_FILE_NAME. */
221 /* A ? needs to match one character. */
223 /* There isn't another character; no match. */
226 /* One character of the string is consumed in matching
227 this ? wildcard, so *??? won't match if there are
228 less than three characters. */
234 /* The wildcard(s) is/are the last element of the pattern.
235 If the name is a file name and contains another slash
236 this does mean it cannot match. */
237 return ((flags & FNM_FILE_NAME) && strchr (n, '/') != NULL
243 endp = __strchrnul (n, (flags & FNM_FILE_NAME) ? '/' : '\0');
247 int flags2 = ((flags & FNM_FILE_NAME)
248 ? flags : (flags & ~FNM_PERIOD));
250 for (--p; n < endp; ++n)
251 if (internal_fnmatch (p, n,
261 else if (c == '/' && (flags & FNM_FILE_NAME))
263 while (*n != '\0' && *n != '/')
266 && (internal_fnmatch (p, n + 1, flags & FNM_PERIOD,
272 int flags2 = ((flags & FNM_FILE_NAME)
273 ? flags : (flags & ~FNM_PERIOD));
275 if (c == '\\' && !(flags & FNM_NOESCAPE))
278 for (--p; n < endp; ++n)
279 if (FOLD ((unsigned char) *n) == c
280 && (internal_fnmatch (p, n,
291 /* If we come here no match is possible with the wildcard. */
296 /* Nonzero if the sense of the character class is inverted. */
297 static int posixly_correct;
301 if (posixly_correct == 0)
302 posixly_correct = getenv ("POSIXLY_CORRECT") != NULL ? 1 : -1;
307 if (*n == '.' && no_leading_period && (n == string
313 if (*n == '/' && (flags & FNM_FILE_NAME))
314 /* `/' cannot be matched. */
317 not = (*p == '!' || (posixly_correct < 0 && *p == '^'));
324 unsigned char fn = FOLD ((unsigned char) *n);
326 if (!(flags & FNM_NOESCAPE) && c == '\\')
330 c = FOLD ((unsigned char) *p);
336 else if (c == '[' && *p == ':')
338 /* Leave room for the null. */
339 char str[CHAR_CLASS_MAX_LENGTH + 1];
341 # if defined _LIBC || (defined HAVE_WCTYPE_H && defined HAVE_WCHAR_H)
344 const char *startp = p;
348 if (c1 > CHAR_CLASS_MAX_LENGTH)
349 /* The name is too long and therefore the pattern
354 if (c == ':' && p[1] == ']')
359 if (c < 'a' || c >= 'z')
361 /* This cannot possibly be a character class name.
362 Match it as a normal range. */
371 # if defined _LIBC || (defined HAVE_WCTYPE_H && defined HAVE_WCHAR_H)
372 wt = IS_CHAR_CLASS (str);
374 /* Invalid character class name. */
377 if (__iswctype (__btowc ((unsigned char) *n), wt))
380 if ((STREQ (str, "alnum") && ISALNUM ((unsigned char) *n))
381 || (STREQ (str, "alpha") && ISALPHA ((unsigned char) *n))
382 || (STREQ (str, "blank") && ISBLANK ((unsigned char) *n))
383 || (STREQ (str, "cntrl") && ISCNTRL ((unsigned char) *n))
384 || (STREQ (str, "digit") && ISDIGIT ((unsigned char) *n))
385 || (STREQ (str, "graph") && ISGRAPH ((unsigned char) *n))
386 || (STREQ (str, "lower") && ISLOWER ((unsigned char) *n))
387 || (STREQ (str, "print") && ISPRINT ((unsigned char) *n))
388 || (STREQ (str, "punct") && ISPUNCT ((unsigned char) *n))
389 || (STREQ (str, "space") && ISSPACE ((unsigned char) *n))
390 || (STREQ (str, "upper") && ISUPPER ((unsigned char) *n))
391 || (STREQ (str, "xdigit") && ISXDIGIT ((unsigned char) *n)))
396 /* [ (unterminated) loses. */
407 if (c == '-' && *p != ']')
410 unsigned char cend = *p++;
411 if (!(flags & FNM_NOESCAPE) && cend == '\\')
416 if (cold <= fn && fn <= FOLD (cend))
432 /* Skip the rest of the [...] that already matched. */
436 /* [... (unterminated) loses. */
440 if (!(flags & FNM_NOESCAPE) && c == '\\')
444 /* XXX 1003.2d11 is unclear if this is right. */
447 else if (c == '[' && *p == ':')
452 while (*p != ':' || p[1] == ']');
463 if (c != FOLD ((unsigned char) *n))
473 if ((flags & FNM_LEADING_DIR) && *n == '/')
474 /* The FNM_LEADING_DIR flag says that "foo*" matches "foobar/frobozz". */
484 fnmatch (const char *pattern, const char *string, int flags)
489 return internal_fnmatch (pattern, string, flags & FNM_PERIOD, flags);
492 #endif /* _LIBC or not __GNU_LIBRARY__. */